Smoke-consuming apparatus.



WITNESSES THERRIEN.

SMOKE CONSUMING APPARATUS. APPLICATION FILED MAR. 12. 1917.

Patented SHEET r.

INVENTOR I Thaw/en.

I. THERRIEN.

SMOKE CONSUMING APPARATUS.

APPLICATION FILED MAR. I2. 1917..

1,279,939. Patented Sept. 2 1918.

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SMOKE CONSUMING APPARATUS. APPLICATION FILED MAR. 12. 1911 om R. Oh

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ISIDORE THERRIEN, OF QUEBEC, QUEBEC, CANADA.

SMOKE-CONSUMING APPARATUS.

Application filed March 12, 1917.

To all whom it may concern:

Be it known that I, IsmoRE THERRIEN, a subject of the King of Great Britain, and residing at 115 Commissioner street, in the city of Quebec, in the Province of Quebec,

in the Dominion of Canada, have invented certain new and useful Improvements in a Smoke-Consuming Apparatus; and I do hereby declare that the following is a full, clear, and exact description of the same.

The invention relates to improvements in smoke consuming furnaces and consists especially of a novel arrangement of a plurality of draft conductors longitudinally dis posed within the fire box.

The object of the invention is to devise a furnace of the character described, in which the oxygen will be suitably proportioned in relation to the carbon and hydrogen escaping from the fuel in combustion.

In all furnaces in which soft coal is used, it is practically impossible to obtain satisfactory results with smoke consumers without proportioning the quantities of oxygen and fuel gases. The air or draft which is blown below the grate arrives on the surface of the fire with a minimum proportion of oxygen and thus oxidizes the hydrogen, which is one of the elements composing the carburets which are very numerous on the surface of the fire, and the pure carbon escapes in the form of smoke. So, in order that combustion may be complete, the air must oxidize all the hydrogen carburets and must transform the carbon into CO In order to attain this result, a special form of furnace must be devised. The invention is better explained by reference to the drawings, in which Figure 1 is a perspective view of the invention secured between the bridge wall of a furnace and the front wall, the side walls being eliminated from the drawin s.

Fig. 2 is an en arged perspective view of one of the draft conductors, a portion of the upper part being shown in section in order to disclose the peculiar arrangement of the draft conduits.

Fig. 3 is a front elevation of a portion of a furnace, showing the draft conductor and the different doors closing the entrance to each section.

Fig. 4 is a perspective view of the draft conductors, the fire box having been removed.

Specification of Letters Patent.

Patented Sept. 24, 1918.

Serial No. 154,197.

Fig. 5 is a longitudinal sectional View through the furnace.

Fig. 6 is a cross section through one of the draft conductors.

Like numerals of reference indicates corresponding parts in each figure.

The device consists of an ordinary boiler furnace having side walls 1 and 2, a front wall 3 and a back wall which is not shown, and 4: is a bridge wall secured within the furnace. 5 is the ash pit, and 6 is the ash pit 'door.

7 .are doors in the front wall of said furnace, suitably hinged, and here shown as being four in number. It may here be mentioned that one door could probably be used just as well as four or five doors; this will depend on the size of the furnace. These doors do not form part of the invention.

8 is the draft conductor, composed of a wide base 9 and an upwardly projecting member 10, here shown as having a V- shaped head 11. The said draft conductor 8 is preferably of the length of the fire box and may be secured on the cross beam 12 at one end. The other end of the said draft conductor is here illustrated as having an outwardly projecting arm 13 which is adapted to be secured in the masonry of the bridge wall of the furnace.

1 1 are cross beams adapted to be supported by said wide base 9. These cross beams 14 are preferably disposed with short spaces between them and are adapted to support the fire bricks which are laid in between the said draft conductors 8 and form a flooring as illustrated in Fig. 1.

16 are vertical transverse channels across the member 10 and preferably perpendicular in relation to the said member 10 and parallel to one another. Said channels have preferably, intermediate of their width, enlarged portions 17 which extend through the bottom of said base member 9 and form communicating passages between the ash pit and the fire pot.

These passages are disposed laterally, and the particular shape of the channels 16 will cause the draft which rushes through the enlarged portions 17 to blow with increased velocity through the said openings 16 into the mass of fuel in combustion at the very spot where the carburets and hydrogen are located, thus oxidizing said carburets and hydrogen.

It will thus be seen that the combustible gases and carbon will be oxidized, while the forced air still has a suflicient amount of oxygen so that there will be no smoke, and only the non-combustible gases, which are colorless, will then escape from the furnace.

The forward part of the fire box between the sections which are formed of fire bricks, is illustrated in Fig. 1 as having an inclined surface toward the front, in order to facilitate the taking-0ut of cinders and clinker-s. Each door 7 preferably corresponds to one of the fire pots formed by the members 8, and the cinders may be scraped out through the said doors or may fall through the chan-- nels 16 into the ash pit 5.

The pipe 18 communicates with the ash pit and is preferably connected at the other end to a blower in order to force air into the pit and through the channels 16.

In Fig. 6 is illustrated a cross-sectional view through one of the draft conductors, and particular attention is called to the V shaped top 11 of the conductor. This V- shaped top has the advantage of properly directing the forced air.

What I claim is p 1. A smoke consuming ffiurnace of the character described, comprising a plurality of draft conducting members disposed with- 1n the fire box, said members havlng V- said air channels communicating at their sides with the combustion zone and at their lower ends with the ash pit of said furnace; and air-tight flooring between said members to support the fuel, substantially as described.

2. A furnace of the character described, comprising a plurality of parallel draft con ducting members secured within the fire box, each member having an outwardly projecting longitudinal flange on each side and also having a plurality of vertical air channels communicating at their sides with the combustion zone and at their lower ends with the ash pit; cross beams between said members, resting on said flanges; and an air-tight flooring on said beams, substantially as described.

Signed at Quebec, Canada, this twentyfourth day of February, 1917.

a VISIDORE THERRIEN. Witnesses lVInLniM W. HEAR EDGAR G. WILLRIcH.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Iatents,

Washington, 'D. G." 

